When the ball goes through the Right in-lane (Switch 17) then also Right out-lane (Switch 18) triggers in the switch test. The other way around too.
If I disconnect the 2-wire in-lane Proximity sensor from the board, the switch-test says Right Out-lane. There is no reaction if I touch the Out-lane switch when the In-lane Proximity sensor is disconnected from the board.
Both the Right In-lane (Switch 17) and Right Out-lane (Switch 18) are triggered if I disconnect the 4-wire power from the in-lane Proximity board and I touch the Right Out-lane.
How could that be possible? What steps should I take to resolve this?